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Mirabeau Buonaparte Lamar (1798–1859)

State of Residence: Texas
  1. Minister Resident (Argentina)
    Appointed: July 23, 1857
    • Commissioned to the Argentine Confederation. Commissioned during a recess of the Senate; did not serve under this appointment.
  2. Envoy Extraordinary and Minister Plenipotentiary (Nicaragua)
    Appointed: December 23, 1857
    • Appointment revoked.
  3. Concurrent Appointments
    1. Minister Resident (Costa Rica)
      Appointed: January 20, 1858
      Presentation of Credentials: September 14, 1858
      Termination of Mission: Notified the Government of Costa Rica by note from Releajo, Nicaragua, of termination of his mission May 20, 1859
      • Also accredited to Nicaragua; resident at Managua.
    2. Minister Resident (Nicaragua)
      Appointed: January 20, 1858
      Presentation of Credentials: February 8, 1858
      Termination of Mission: Left post on May 20, 1859
      • Also accredited to Costa Rica; resident at Managua.